185/55R15 Tires

Understanding 185/55R15 tire size is crucial for making informed decisions when purchasing new tires, whether it is for replacement or upgrade, as it plays an important role in your vehicle's performance and safety. Let's explore 185/55R15 tire specs and dimensions, what vehicles come equipped with 185/55R15 tires, what are its replacement options, and where to buy 185/55R15 tires at lowest prices online.

Buy 185/55R15 Tires from $52.71

How to read 185/55R15 tire size?

185/55R15 is a Metric tire size that is commonly used on passenger and crossover vehicles. It also comes in a P-Metric (P185/55R15) variant.

Let us decode each aspect of 185/55R15 tire size dimensions for better understanding:

  • 185 indicates tire's section width, which includes the entire width of the tire from one sidewall to the other. The tread width is typically a bit narrower than the section width. Section width of 185/55R15 tire is 185 millimeters.
  • 55 represents the aspect ratio of a tire. It is the ratio of the tire's sidewall height to its width. For 185/55R15 tire, the sidewall height is 55% of its tread width.
  • R denotes that tire has radial construction.
  • 15 indicates the wheel diameter in inches that the tire is designed to fit. 185/55R15 can be mounted on rims with 15 inches in diameter.

You can learn more about tire size markings on tire sidewall with our comprehensive guide on how to read tire size.

185/55R15 Tire Dimensions

Compare and visualize 185/55R15 tire dimensions in both inches and millimeters. Tire size calculator will help you calculate the dimensions of any tire size.

185/55R15 Section Width
7.3"
23"
185/55R15 Tire Side
Tire Circumference
72.2"
15"
4"
878 Revs/Mile
Metric Inches
Tire Width 185 mm 7.3"
Aspect Ratio 55%
Rim Diameter 381 mm 15"
Tire Diameter 585 mm 23"
Sidewall Height 102 mm 4"
Circumference 1837 mm 72.2"
Revolutions 544 per km 878 per mile

185/55R15 Tire Width

Tire width is the measurement of the tire's cross-section at its widest point. 185/55R15 tire has a width of 185 millimeters or 7.3 inches.

Tires with section width of 185 millimeters come equipped on a variety of crossovers, minivans and passenger cars.

185 millimeters represents standard tire width. Standard width tires are very versatile, covering the needs of everyday drivers. They offer a balance of traction, fuel or energy efficiency, and handling.

Tire width plays a pivotal role in determining a vehicle's handling, safety, and efficiency. It is crucial to consider the compatibility of tire width with the vehicle's design and the manufacturer's specifications to maintain optimal functionality and ensure safety.

Tire Width
7.3"

185/55R15 Aspect Ratio

Tire aspect ratio represents the height of the tire's sidewall as a percentage of its width. 185/55R15 tire size has an aspect ratio of 55%.

Tires with an aspect ratio of 55 represent a category that balances performance with comfort, making them suitable for a wide range of vehicles. This tire width is particularly common in modern passenger cars, including sedans, coupes, crossovers and SUVs.

Tires with this aspect ratio offer a good compromise between the agile handling of lower profiles and the increased comfort of higher profiles. They are designed to meet the needs of drivers who want a blend of comfort, handling, and aesthetic appeal.

185/55R15 Rim Diameter

Rim diameter refers to the diameter of the wheel on which the tire is mounted, commonly measured in inches. 185/55R15 tire can be mounted on 15-inch wheels. The rim diameter directly correlates with the overall diameter of the tire and affects various aspects of vehicle performance and aesthetics.

Tires with rim diameter of 15 inches are equipped on a select crossover, minivan, passenger car, pickup truck, sport utility vehicle and van models.

Rims with a 15-inch diameter are common on mid-size and full-size sedans, as well as some crossovers and SUVs. They offer a balance between ride comfort, handling, and aesthetic appeal.

When selecting a rim diameter, it's crucial to consider the vehicle's design specifications, as altering the rim size can affect the speedometer and odometer calibration, vehicle handling, suspension geometry, and brake clearance.

Rim Diameter
15"

185/55R15 Tire Diameter / Height

Tire diameter represens the total height of a tire, including the rim, when it is fully inflated and not under load. 185/55R15 tire height is 585 millimeters or 23 inches.

Tire height affects the clearance between the tire and the vehicle's body or chassis, influences the vehicle's ground clearance, and can impact the accuracy of the vehicle's speedometer and odometer.

For standard passenger cars, tire diameters typically range from about 24 to 30 inches. This includes sedans, hatchbacks, small SUVs, and minivans. Light trucks and larger SUVs might have tires on the higher end of this range or slightly above, often between 29 to 33 inches. Sports cars and high-performance vehicles may have similar diameter ranges as standard passenger cars, but they often feature wider tires with a lower aspect ratio, which can slightly affect the overall diameter. The range for these vehicles is typically between 24 to 30 inches, focusing more on width and profile for performance. Off-road vehicles, including larger SUVs, trucks, and specialized vehicles, often have larger tire diameters to handle rough terrain better. The diameters for these vehicles can range from about 31 to 40 inches or more, depending on the level of off-road capability and customization.

Tire Diameter
23"

185/55R15 Sidewall Height

Tire sidewall height, determined by the aspect ratio of a tire, represents the height of the tire's sidewall, measured from the edge of the rim to the top of the tread. 185/55R15 tire sidewall is 102 millimeters or 4 inches tall.

Sidewall height affects the tire's ability to dissipate heat and impacts its load-bearing capacity. It also plays a role in aesthetic appeal for many drivers, influencing the overall look of the vehicle.

Tires with a sidewall height of 4" are considered low profile. Lower sidewall height, commonly seen in performance tires, generally enhances handling and steering response by reducing flex and deformation under stress. This results in a firmer ride quality and increased stability at higher speeds, making them suitable for sports and performance vehicles.

Sidewall Height
4"

185/55R15 Circumference

Tire circumference is the total distance around the outer edge of the tire. 185/55R15 tire has a circumference of 1837 millimeters or 72.2 inches.

Tires with a circumference of 72.2 inches are typically found on small cars and compact vehicles. The advantage of smaller circumference tires is that they generally provide better fuel efficiency, enhanced acceleration and more responsive handling for easier maneuverability. However, they may offer less traction and a rougher ride compared to larger tires.

Tire circumference directly influences the speedometer and odometer readings of a vehicle. Mismatched tire circumferences, especially on the same axle, can lead to uneven wear, handling issues, and even mechanical damage, particularly in all-wheel or four-wheel-drive vehicles.

185/55R15 Circumference
Tire Circumference
72.2"

185/55R15 Revolutions

Tire revolutions metric reflects the number of times a tire rotates over a fixed distance. This figure is inherently tied to the tire's circumference - the larger the circumference, the fewer the revolutions needed to cover a mile, and vice versa. 185/55R15 tire makes 544 revolutions per kilometer or 878 revolutions per mile.

Number of the revolutions a tire makes affects greatly vehicle's performance, from speed and distance measurement accuracy to handling, fuel efficiency, and wear and tear.

Popular 185/55R15 tire models

Listed below are most affordable tire models available in 185/55R15 tire size.

Shop more 185/55R15 tires with tire finder.

What is 185/55R15 in inches?

When converted to inches, 185/55R15 tire size is equivalent to 23x7.3R15. 23 inches indicate the tire diameter, 7.3 inches represent tread width, and 15 inches is the diameter of a rim the tire can be mounted on.

Learn more about 185/55R15 in inches conversion.

185/55R15 Vehicle Fitment

There are 9 vehicle models that use 185/55R15 as an original equipment tire size. It's important to consult your vehicle's owner manual or a tire fitment guide specific to your car model to ensure this tire size is compatible with your vehicle. Vehicle manufacturers recommend specific tire sizes to ensure optimal performance and safety.

Select your vehicle model for its OEM tire size configuration.

What are replacement sizes for 185/55R15 tire?

185/55R15 alternative has to be within 3% of the original tire's overall diameter to ensure safe drive and proper speedometer readings. Below is a list of 185/55R15 equivalent and plus sizes that are within the optimal characteristics and dimensions of the orignal tire size.

Keep in mind that different vehicles have different tire requirements. Passenger cars, SUVs, trucks, and high-performance vehicles each have specific types of tires that are engineered for their particular needs. When replacing tires on your vehicle, always refer to your vehicle's owner's manual for manufacturer recommendations on tire size, type, and other specifications.

Replacement Tire Size Tire Diameter Difference
175/55R15 -2.1%
195/50R15 -1.4%
195/55R15 1.7%
175/60R15 1%
195/45R16 -0.5%
195/50R16 2.9%
P195/50R16 2.9%
195/40R17 0.5%

What wheels can 185/55R15 tire be mounted on?

185/55R15 tires are generally approved to be mounted on 5" to 6.5" wide wheels. The following wheel sizes can be used:

  • 15x5
  • 15x5.5
  • 15x6
  • 15x6.5

It is important to note that while a tire might physically fit on a wheel outside of the recommended widths, doing so can affect the tire's performance, handling, and wear. Always refer to your vehicle's manufacturer guidelines and the tire manufacturer's specifications for the best results.

185/55R15 Tire Size Comparison Chart

Below is a comparison chart where we compare 185/55R15 tire size with other popular sizes. Green indicates that new tire diameter is within the acceptable 3% of the original, while red warns that tire will adversely affect the vehicle's speedometer reading, handling characteristics, or clearance in the wheel well. We recommend to use the tire size comparison tool to ensure proper compatibility when switching to a new tire size.

Tire Size Comparison Tire Diameter Difference
185/55R15 vs 265/70R15 28.7%
185/55R15 vs 215/70R15 16.8%
185/55R15 vs P235/70R15 21.5%
185/55R15 vs 215/60R15 9.2%
185/55R15 vs P275/60R15 21.5%
185/55R15 vs 225/50R15 3.8%
185/55R15 vs 205/75R15 17.8%
185/55R15 vs 205/70R15 14.4%
185/55R15 vs 215/65R15 13%
185/55R15 vs 205/65R15 10.6%
185/55R15 vs 215/75R15 20.2%
185/55R15 vs 225/75R15 22.9%
185/55R15 vs P235/75R15 25.3%
185/55R15 vs LT215/75R15 20.3%
185/55R15 vs LT235/75R15 25.5%
185/55R15 vs 235/70R15 21.5%
185/55R15 vs P185/65R15 6.2%
185/55R15 vs P195/60R15 5.1%
185/55R15 vs P195/65R15 8.5%
185/55R15 vs P205/65R15 10.6%
185/55R15 vs P215/65R15 13%
185/55R15 vs P215/70R15 16.8%
185/55R15 vs P225/70R15 19.1%
185/55R15 vs 205/60R15 7.2%
185/55R15 vs 225/45R15 -0.3%
185/55R15 vs 255/70R15 26.3%
185/55R15 vs 195/65R15 8.5%
185/55R15 vs 185/60R15 3.1%
185/55R15 vs 195/60R15 5.1%
185/55R15 vs 195/70R15C 12%
185/55R15 vs 185/60R15C 3.1%
185/55R15 vs 185/65R15 6.2%
185/55R15 vs 175/65R15 4.1%
185/55R15 vs 195/50R15 -1.4%
185/55R15 vs 225/70R15 19.1%
185/55R15 vs 195/55R15 1.7%
185/55R15 vs 175/55R15 -2.1%
185/55R15 vs 235/75R15 25.3%
185/55R15 vs 205/50R15 0.3%
185/55R15 vs LT265/75R16 37.4%
185/55R15 vs LT285/75R16 42.6%
185/55R15 vs P205/60R16 11.5%
185/55R15 vs P205/55R16 8%
185/55R15 vs LT255/85R16 43.6%
185/55R15 vs LT265/70R16 32.8%
185/55R15 vs 255/70R16 30.6%
185/55R15 vs 265/70R16 33%
185/55R15 vs 265/75R16 37.4%
185/55R15 vs LT215/85R16 32%
185/55R15 vs LT225/75R16 27.2%
185/55R15 vs LT305/70R16 42.4%
185/55R15 vs LT235/85R16 37.8%
185/55R15 vs LT245/75R16 32.3%
185/55R15 vs P235/75R16 29.6%
185/55R15 vs P205/65R16 14.9%
185/55R15 vs LT245/70R16 28%
185/55R15 vs 245/75R16 32.3%
185/55R15 vs P265/75R16 37.4%
185/55R15 vs 245/70R16 28.2%
185/55R15 vs 235/75R16 29.6%
185/55R15 vs 245/45R16 7%
185/55R15 vs 245/50R16 11.5%
185/55R15 vs 205/70R16 18.6%
185/55R15 vs 225/75R16 27.2%
185/55R15 vs P255/70R16 30.6%
185/55R15 vs P245/75R16 32.3%
185/55R15 vs P215/70R16 21%
185/55R15 vs P225/60R16 15.6%
185/55R15 vs 275/70R16 35.4%
185/55R15 vs P225/70R16 23.4%
185/55R15 vs P225/75R16 27.2%
185/55R15 vs P265/70R16 33%
185/55R15 vs P235/70R16 25.8%
185/55R15 vs P245/70R16 28.2%
185/55R15 vs LT315/75R16 50.3%
185/55R15 vs 255/65R16 26.2%
185/55R15 vs 215/70R16 21%
185/55R15 vs 205/60R16 11.5%
185/55R15 vs 235/60R16 17.6%
185/55R15 vs 225/55R16 11.8%
185/55R15 vs 235/65R16 21.7%
185/55R15 vs 205/55R16 8%
185/55R15 vs 235/65R16C 21.7%
185/55R15 vs 205/50R16 4.6%
185/55R15 vs 205/45R16 0.9%
185/55R15 vs 205/65R16 14.9%
185/55R15 vs 205/75R16C 22.1%
185/55R15 vs 215/65R16 17.3%
185/55R15 vs 225/65R16 19.3%
185/55R15 vs 215/60R16 13.5%
185/55R15 vs 225/50R16 8%
185/55R15 vs 225/70R16 23.4%
185/55R15 vs 215/55R16 9.7%
185/55R15 vs 225/75R16C 27.2%
185/55R15 vs 215/45R16 2.6%
185/55R15 vs 235/70R16 25.8%
185/55R15 vs 195/45R16 -0.5%
185/55R15 vs 195/55R16 6%
185/55R15 vs 185/55R16 4.3%
185/55R15 vs 195/50R16 2.9%
185/55R15 vs P215/60R16 13.5%
185/55R15 vs 195/60R16 9.4%
185/55R15 vs 195/75R16C 19.3%
185/55R15 vs 225/60R16 15.6%
185/55R15 vs LT295/70R17 44.4%
185/55R15 vs P275/40R17 11.5%
185/55R15 vs LT305/65R17 41.5%
185/55R15 vs P265/65R17 32.6%
185/55R15 vs P265/70R17 37.4%
185/55R15 vs P255/70R17 35%
185/55R15 vs 215/60R17 17.9%
185/55R15 vs LT255/80R17 43.6%
185/55R15 vs LT305/70R17 46.8%
185/55R15 vs P245/70R17 32.6%
185/55R15 vs 215/65R17 21.7%
185/55R15 vs P245/65R17 28.2%
185/55R15 vs P235/75R17 34%
185/55R15 vs 225/45R17 8.4%
185/55R15 vs 205/40R17 1.9%
185/55R15 vs LT285/75R17 46.8%
185/55R15 vs P285/70R17 42.2%
185/55R15 vs 235/75R17 34%
185/55R15 vs 205/45R17 5.3%
185/55R15 vs 265/60R17 28.2%
185/55R15 vs 205/50R17 9.1%
185/55R15 vs 275/60R17 30.3%
185/55R15 vs LT225/75R17 31.5%
185/55R15 vs 285/70R17 42.2%
185/55R15 vs 315/35R17 11.5%
185/55R15 vs LT225/65R17 23.8%
185/55R15 vs LT245/65R17 28.2%
185/55R15 vs 215/40R17 3.2%
185/55R15 vs P315/35R17 11.5%
185/55R15 vs 215/45R17 7%
185/55R15 vs 215/50R17 10.8%
185/55R15 vs 215/55R17 14.2%
185/55R15 vs 255/65R17 30.6%
185/55R15 vs LT235/80R17 38.1%
185/55R15 vs 245/40R17 7.4%
185/55R15 vs LT245/70R17 32.5%
185/55R15 vs 235/70R17 30.3%
185/55R15 vs LT245/75R17 36.6%
185/55R15 vs LT255/75R17 39.1%
185/55R15 vs LT265/65R17 32.6%
185/55R15 vs LT265/70R17 37.3%
185/55R15 vs 235/65R17 26.2%
185/55R15 vs LT275/70R17 39.7%
185/55R15 vs 245/45R17 11.5%
185/55R15 vs 245/50R17 15.9%
185/55R15 vs 255/60R17 26.2%
185/55R15 vs 255/70R17 35%
185/55R15 vs 255/75R17 39.1%
185/55R15 vs 265/65R17 32.6%
185/55R15 vs 255/45R17 13.2%
185/55R15 vs 255/40R17 8.7%
185/55R15 vs 265/70R17 37.4%
185/55R15 vs 245/75R17 36.8%
185/55R15 vs 275/40R17 11.5%
185/55R15 vs 245/70R17 32.6%
185/55R15 vs LT285/70R17 42.1%
185/55R15 vs LT315/70R17 49.2%
185/55R15 vs 235/60R17 22.1%
185/55R15 vs P225/50R17 12.5%
185/55R15 vs P225/55R17 16.2%
185/55R15 vs P225/60R17 20%
185/55R15 vs P225/65R17 23.8%
185/55R15 vs 225/60R17 20%
185/55R15 vs 225/55R17 16.2%
185/55R15 vs P235/60R17 22.1%
185/55R15 vs P235/65R17 26.2%
185/55R15 vs 205/55R17 12.5%
185/55R15 vs 225/50R17 12.5%
185/55R15 vs P225/45R17 8.4%
185/55R15 vs 225/65R17 23.8%
185/55R15 vs P205/50R17 9.1%
185/55R15 vs 235/55R17 17.9%
185/55R15 vs 235/50R17 14.2%
185/55R15 vs 235/45R17 10.1%
185/55R15 vs 235/40R17 6%
185/55R15 vs P215/45R17 7%
185/55R15 vs P215/55R17 14.2%
185/55R15 vs 245/65R17 28.2%
185/55R15 vs P215/60R17 17.9%
185/55R15 vs P215/65R17 21.7%
185/55R15 vs P235/70R17 30.3%

All listed guides, data and/or calculations are for informational purposes only. TireSizes.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information.